Merge pull request #133 in ZP/z-push from feature/ZP-781-nicer-format-for-memory-usage-and to develop

* commit '673e1981':
  ZP-781 Use comma as decimal and dot as thousand separators, add 's' as unit for time usage.
  ZP-781 Nicer format for memory usage.

(cherry picked from commit 109eb8f7)

Conflicts:
	src/lib/utils/utils.php